摘要
从分析土壤的各种性质入手 ,利用物理化学原理讨论了土壤电阻率的本质及其影响因素 .结合电极过程动力学理论 ,研究了电迁移对金属在土壤中腐蚀的电极过程的影响 ,从而说明了用土壤电阻率来判断金属材料在土壤中的腐蚀速度有时会出现误判的原因 .并解释了某些酸性土壤中金属材料的腐蚀速度随土壤电阻率的增大而增大 ,在某些含盐量高的土壤中金属材料的腐蚀速度不随土壤电阻率的减小而减小却会增大的现象 .
Based on the analysis of the properties of soil, the essence and relative of resistivity of the soil are discussed with the physic chemical theory. The effect of electric migration on the electrode processes of the metal corrosion in soil is studied with the theory of the electrode kinetics. The result shows that the soil resistivity can't be the critersion of the corrosion rates of metal in a variety of soil. It can be explained that the corrosion rates of metal in some acid soils increase with the soil resistivity increase, while the corrosion rates of metal in certain soils containing high salt content do not increase as well as soil resistivity decrease.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第5期103-106,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金重大项目 (5 9899140 )
关键词
土壤腐蚀
腐蚀速度
电极过程
土壤电阻率
电迁移
金属材料
soil corrosion
corrosion velocity
electrode processes
soil resistivity
electric migration
